220111019957 has 2 divisors, whose sum is σ = 220111019958. Its totient is φ = 220111019956.

The previous prime is 220111019939. The next prime is 220111019971. The reversal of 220111019957 is 759910111022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175519940401 + 44591079556 = 418951^2 + 211166^2 .

It is a cyclic number.

It is not a de Polignac number, because 220111019957 - 2¹⁴ = 220111003573 is a prime.

It is a super-2 number, since 2×220111019957² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220111019957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220111019857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110055509978 + 110055509979.

It is an arithmetic number, because the mean of its divisors is an integer number (110055509979).

Almost surely, 2^220111019957 is an apocalyptic number.

It is an amenable number.

220111019957 is a deficient number, since it is larger than the sum of its proper divisors (1).

220111019957 is an equidigital number, since it uses as much as digits as its factorization.

220111019957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 38.

The spelling of 220111019957 in words is "two hundred twenty billion, one hundred eleven million, nineteen thousand, nine hundred fifty-seven".